af9c5e95c0df1a4f5aa7ea378946cbd69f92fb34631b8a05eb2415e5743e34c0

Analysis

max time kernel
155s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 10:31

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General

Target

2024-01-29_973751d2e171e7bc6e7c08641e1b9548_cryptolocker.exe
Size

41KB
MD5

973751d2e171e7bc6e7c08641e1b9548
SHA1

a1bb3fffd8fe1778b7ccd83441b7892e481d8d25
SHA256

af9c5e95c0df1a4f5aa7ea378946cbd69f92fb34631b8a05eb2415e5743e34c0
SHA512

fc35929b6d434ef36151548758e61c9e95f8aa69104fa3d20f65034953054fba60015506dc3dcc2cfbb504d5488da9a438d8f4d50fc13e2e42f5ad0d21c667a9
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFp1j:bxNrC7kYo1Fxf3s05rwxbF7j

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023137-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-29_973751d2e171e7bc6e7c08641e1b9548_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4892	pissa.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 4892	1504	2024-01-29_973751d2e171e7bc6e7c08641e1b9548_cryptolocker.exe	84
PID 1504 wrote to memory of 4892	1504	2024-01-29_973751d2e171e7bc6e7c08641e1b9548_cryptolocker.exe	84
PID 1504 wrote to memory of 4892	1504	2024-01-29_973751d2e171e7bc6e7c08641e1b9548_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-01-29_973751d2e171e7bc6e7c08641e1b9548_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_973751d2e171e7bc6e7c08641e1b9548_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:4892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\pissa.exe

Filesize
41KB

MD5
e9db320f4771b8213bcdf065a67e79cd

SHA1
7ea44ee0441f4b7212831094db854470bd3612a6

SHA256
d4b96dd86eb46cae719961f860f4ec5b701642e77b803432f452c80c3582f86c

SHA512
cd4ba1704614efcd8142918b1cca0aa3712758f8ffb0f01772d09e887b10d722e34febbcb4d8928eaa14710dc44ae2f75cf69cbc6eaf8e462016eaebb24093f0

Download Submit
memory/1504-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/1504-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/1504-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4892-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/4892-19-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download